<template>
  <div>
    <!-- 面包屑导航区 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>商品列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图 -->
    <el-card>
      <!-- 搜索与添加区域 -->
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input
            placeholder="请输入内容"
            v-model="queryInfo.query"
            clearable
            @clear="getGoodsList"
          >
            <el-button
              slot="append"
              icon="el-icon-search"
              @click="getGoodsList"
            ></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" size="mini" @click="goAddpage"
            >添加商品</el-button
          >
        </el-col>
      </el-row>
      <!-- table表格区域 -->
      <el-table :data="goodslist" border stripe>
        <el-table-column type="index" label="#"></el-table-column>
        <el-table-column label="商品名称" prop="goods_name"></el-table-column>
        <el-table-column
          label="商品价格(元)"
          prop="goods_price"
          width="95px"
        ></el-table-column>
        <el-table-column
          label="商品重量"
          prop="goods_weight"
          width="70px"
        ></el-table-column>
        <el-table-column
          label="商品数量"
          prop="goods_number"
          width="70px"
        ></el-table-column>
        <el-table-column label="创建时间" prop="add_time" width="150px">
          <template slot-scope="scope">
            {{ scope.row.add_time | dateFormat }}
          </template>
        </el-table-column>
        <el-table-column label="操作" width="180px">
          <template slot-scope="scope">
            <el-button
              type="primary"
              icon="el-icon-edit"
              size="mini"
              @click="showEditDialog(scope.row.goods_id)"
            ></el-button>
            <el-button
              type="danger"
              icon="el-icon-delete"
              size="mini"
              @click="removeById(scope.row.goods_id)"
            ></el-button>
          </template>
        </el-table-column>
      </el-table>
      <!-- 分页 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[5, 10, 15, 20]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
        background
      >
      </el-pagination>
    </el-card>
    <!-- 编辑商品信息 -->
     <el-dialog
      title="编辑商品信息"
      :visible.sync="editCateDialogVisible"
      width="50%"
      @close="editCateDialogClosed"
    >
      <!-- 编辑商品信息 -->
      <el-form
        :model="editCateForm"
        :rules="editCateFormRules"
        ref="editCateFormRef"
        label-width="120px"
      >
        <el-form-item label="商品名称:" prop="goods_name">
          <el-input v-model="editCateForm.goods_name"></el-input>
        </el-form-item>
        <el-form-item label="商品价格(元):" prop="goods_price">
          <el-input v-model="editCateForm.goods_price"></el-input>
        </el-form-item>
        <el-form-item label="商品数量:" prop="goods_number">
          <el-input v-model="editCateForm.goods_number"></el-input>
        </el-form-item>
        <el-form-item label="商品重量:" prop="goods_weight">
          <el-input v-model="editCateForm.goods_weight"></el-input>
        </el-form-item>
        
        
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editCateDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editUserInfo">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>
<script>
export default {
  data() {
    return {
      // 查询数据列表
      queryInfo: {
        query: '',
        pagenum: 1,
        pagesize: 10
      },
      // 商品列表
      goodslist: [],
      editCateForm:{},
      //  编辑分类的表单验证规则验证
      editCateFormRules: {
        goods_name: [
          { required: true, message: '请输入商品名称', trigger: 'blur' }
        ],
        goods_price: [
          { required: true, message: '请输入商品价格(元)', trigger: 'blur' }
        ],
        goods_number: [
          { required: true, message: '请输入商品数量', trigger: 'blur' }
        ],
        goods_weight: [
          { required: true, message: '请输入商品重量', trigger: 'blur' }
        ]
      },
      // 总数据条数
      total: 0,
      // 控制编辑分类对话框的显示与隐藏
      editCateDialogVisible: false,
    }
  },
  created() {
    this.getGoodsList()
  },
  methods: {
    // 根据分页获取对应的商品列表
    async getGoodsList() {
      const { data: res } = await this.$http.get(`goods`, {
        params: this.queryInfo
      })
      if (res.meta.status !== 200) {
        return this.$message.error('获取商品列表失败!')
      }
      console.log(res.data)
      this.goodslist = res.data.goods
      this.total = res.data.total
    },
    // 监听 pagesize 改变的事件
    handleSizeChange(newSize) {
      this.queryInfo.pagesize = newSize
      this.getGoodsList()
    },
    // 监听 页码值 改变的事件
    handleCurrentChange(newPage) {
      this.queryInfo.pagenum = newPage
      this.getGoodsList()
    },
     //展示编辑商品的对话框,展开之前查询用户的id展示
    async showEditDialog(id ) {
      console.log(id )
      const { data: res } = await this.$http.get('goods/' + id )
      if (res.meta.status !== 200) {
        return this.$message.error('查询用户数据失败')
      }
      this.editCateForm = res.data
      this.editCateDialogVisible = true
    },
    // 监听编辑商品对话框的关闭事件,重置表单数据
    editCateDialogClosed() {
      this.$refs.editCateFormRef.resetFields()
    },
    //编辑分类表单并验证
    editUserInfo() {
      this.$refs.editCateFormRef.validate(async valid => {
        if (!valid) return
        //发起修改用户信息的数据请求
        const { data: res } = await this.$http.put(
          'goods/' + this.editCateForm.goods_id ,
          { 
            goods_cat: this.editCateForm.goods_cat,
            goods_id: this.editCateForm.goods_id,
            goods_name: this.editCateForm.goods_name,
            goods_price: this.editCateForm.goods_price,
            goods_weight: this.editCateForm.goods_weight,
            goods_number: this.editCateForm.goods_number,
          }
        )
        if (res.meta.status !== 200) {
          return this.$message.error('更新用户信息失败!')
        }
         //提示修改成功
         this.$message.success('更新用户信息成功!')
        //关闭对话框
        this.editCateDialogVisible = false
        //刷新数据列表
        this.getGoodsList();
       
      })

    },
    // 根据id删除商品
    async removeById(id) {
      //弹框询问商品是否删除
      const confirmResult = await this.$confirm(
        '此操作将永久删除该商品, 是否继续?',
        '提示',
        {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }
      ).catch(err => err)

      //如果商品确认删除,则返回字符串 confirm
      //如果商品取消删除,则返回字符串 cancel
      // console.log(confirmResult)
      if (confirmResult !== 'confirm') {
        return this.$message.info('已取消删除')
      }
      const { data: res } = await this.$http.delete(`goods/${id}`)
      if (res.meta.status !== 200) {
        return this.$message.error('删除商品失败!')
      }
      this.$message.success('删除商品成功!')
      this.getGoodsList()
    },
    goAddpage(){
      this.$router.push('/goods/add')
    }
  }
}
</script>
<style lang="less" scoped>
</style>>